Rod Page at iPhylo:
My own view is that much of the work on tree searching in TreeBASE, for example by Jason Wang and collaborators — while interesting — is misplaced. I don’t get the sense that biologists are really interested in asking the question “find me trees like this”. Rather, I think biologists are really interested in questions such as “find me trees that have x more closely related to y than to z”, or “find me trees in which group x is/is not monophyletic”. I think these are pattern matching queries, or more fundamentally, I think they are all in essence least common ancestor (LCA) queries.
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